| Value | Category | Cases | |
|---|---|---|---|
| 1 | never | 10800 |
89.6%
|
| 2 | 1 to 3 times a year | 948 |
7.9%
|
| 3 | 4 to 6 times a year | 166 |
1.4%
|
| 4 | 7 to 9 times a year | 44 |
0.4%
|
| 5 | 10+ times a year | 86 |
0.7%
|
| 8 | don't remember | 8 |
0.1%
|
| Sysmiss | 863 |